Word problem

Question

The surface area of a right circular cylinder in given by the formula SA= 2(pi)r[r+h]. Solve for the height h in the formula as a function of the surface are and radius.

Answer 1

SA = 2πr(r+h)

SA = 2πr² + 2πrh

SA - 2πr² = 2πrh

(SA-2πr²)/2πr = h